Control resistance bellows



Feb, 10, 1925.

H. SANNER CONTROL RESISTANCE BELLows Filed Nov. 21, 1925 Patented remo, 192s.` UNITED STATES- OFFICE.

Humanas SANNER, or cmcaeo1LL1noIs, AssIeNoR 'ro Loman mmm, or cmcaeagmmors. i y

' CONTROL nEsI's'rAncE BnLLowaf 7 y animation mea november a1, 1.923'. serial mi. 676,206.

may concern:

.Toy-all /w-hom t e that I, Humana' SANNER, a

Be it known citizen of the 'United States, residing; at

li'cation. y My invention relates to improvements in and has for one object to provide a new and improved formA projecting from which is a Ueshaped bracketl 4A1 which carries 'an 'electrically f excited A is a.' solenoid plunger which carries a working rod A which mayother suitable material as at B1.

Chicago, in the county of ACook and State of.

Illinols, have invented a certain new and useful Improvement in `GontrolBesistanoe the following isa speci-y needle valve at any ward movement ofthe solenoid lun'er f Bellows, of which control resistance bellows of resistance or dash pot mechanismfor use in connection with of vall kinds and particularly nection with electrical switches and ,the like as a substitute for dash pots. One object of my invention is to provide .suchfa device Y. a 1 The bellows itself comprisesl end annularg orl lm pervicus material,

which will be more sensitive and responsive in action than is the normal dash pot. Other objects will appear from specification and claims.

My invention drawings wherein: i ,Figure 1` showsa `side elevation of my device in connection with a solenoid plunger: Figure 2 shows va section on `an e arged scale through the bellows." j A *Like parts are designated'by: like charA` acters throughout. e 'v A indicates a support or :switch board solenoid coil A.

lead to a switch.. not here shown' Projecting downwardly from the plunger A is a con# trol rod A's carrying loosely mounted'thereon a hooked valve rod A.

This valve rod A terminatesin a valve head B having a facing of felt or rubber or B is a. valve cup centrally apertured to permit the passing of the valve stem A, and provided with an inwardly-projecting annular ring so that.

B in opposition to the packingB1 when the ring B is held against the packing B1. as for instance by an upward movement of the solenoid plunger A. `and hook A."the entrance of air into the valve housing along the valve stem A is prevented. Movement of the solenoid plunger downward, of

course. frees the ring B from engagement with th'e packing B1,l and permits air to enter into the valve housing andthence into .may be. accurately f lmaypenetrate past 'the' valve zB,

wille-be the upward `movementoflthevalve l Vstem A.f -As air is thel downward movement, ofcourse, depends n ot onthe valveB buton the valve B and delayed action machinery foruse 1n con time to time in the e centrally; a isI illustrated fmo're or vless diagrammat'cally in gthe accompanying with by a washer C1 the annular ange'on AC C2 are bellows rings of tight joint.-

` the valve' stem B There is a slight initial .this time is the rate ofi lows arrangement passage Bg 'desired point. The u .controlled because fthe through which the-,air

snaller the opening theslower ldrawn intothel-bellows is muchmore rapid.l '1

disk C of flexible preferably rubberizedlcloth This .diskisrtured in "line with housing B.

the valve housing and the inner periphery of the washer or disk C.

diameter as the diskCbut of larger inner diameter. These rings' are held together at ktheir inner and outer peripherie's bv means .i `of compression washers C upset to grip their edges to The upper one .of the held on the disk C by similar washer C* and they lower one is attached to a disk C bv a' similar washer. This disk C is mounted on and it mav be of iiexible material as'arethe other disks. o'r of metal or of any other suitable material.

In operation when `the solenoidis excitedA it pulls up on the solenoid nlunger.-This immediately seats the valve B andpulls up. on

the bellows creating a vacuum therein.

movement until the bellows walls and disks are under tensionwhen that movement ceases or slows down, -it being limited only .by the speed which the air may enter the lower controlvalve as the solenoid plunger continues its pull. The time of travel ofthe solenoid plunger can be very accurately set vand controlled by adjusting the needle valve and the onlv thing that controls ow of air. There is no appreciableriction and no account need betaken 'of the resistance of an oil lm. or

temperature, or moisture/changes so that the the same outer 'and C4 which are. v

make an air i group is the bellowsrv-Bindicates generally-thelbelmounted on the adjustable` valvehaving a screw'shank'andthumb nut `bylwhich the'ow of thev air in through-the lmay regulated by-setting the 1 the-valve It is held in connection there'- f which is upsettov grip los only adjustment of the rate of movement is made by manipulation of the needle valve.

It will be evident that I have shown inv tively rigid washers crimped about theirA opposed inner and outer peripheries to form air tight joints between the adjacent disks.

2; Thel combination with a solenoid coil and plunger actuated thereby, 'of a bellows, one element of which `is connected tothe lunger, the other element of which is rigldly mounted, and an adjustable valve adapted to permit gradual air iow, responsive to the expanding movement of the bellows resulting from the solenoid operation.

3. The combination with a solenoid coil and plunger actuated thereby, of a bellows, one element of which is connected to the plunger, the other element of which is rigidly mounted, and` an adjustable valve adapted to permit gradual air flow, responsive to the expanding movement of the bellows resultin from the solenoid operation, and means or permitting rapid air flow when the plunger is moved in an opposite direction to `collapse the bellows.

4. A combination with a solenoid coil and plunger of a bellows connected thereto, a valve forming a part of said connection adapted to close completely when the lun er moves in one direction, and to open A or ree air flow when the plunger moves in the opposite direction.

5. A combination with a solenoid coil and plunger of a bellows connected thereto, a valve forming a part of said connection adapted to close completely when the plunger moves in one direction, and to open or free air iow when the plunger moves in the opposite direction, and a control valve adapted to permit gradual air flow.

6. A bellows comprising a hollow valve stein, an adjustable needle valve adapted to control air passing therethrough, an annular plate mounted thereon, a plurality of superposed flexible annular vdisks joined at their alternate inner and outer eripheries, one of the disks being joine at its outer periphery to the 'outer periphery of `eries, one. of the disks being joine the annular plate, and a closure yfor the opposed end of the bellows.

7 A bellows comprisin a hollow valve stem, an adjustable need e valve adapted to control air passing therethrough, an annular plate mounted thereon, a plurality of superposed flexible annular disks joined at their alternate inner and outer peripheries,one of the disks being joined at its outer periphery to the outer periphery of the annular plate, and a closure for the opposed end of the bellows, a separate valve vassociated with vthe bellows adapted to Seat and closewhen the bellows move-in onedirection and to open wide for the free passage of air when the bellows move in an opposite direction. v y

8. A bellows comprisin a hollow valve stem, an ladjustable need e valve adapted to control air passing therethrough, an annular plate mounted thereon, a plurality of superposed flexible annular disks joined at their alternate inner and outer peripheries, one of the disks being joined to the annular plate, and a closure for the opposed end of the bellows, a `separate valve associated with the bellows adapted to seat and close when the bellows move in one direction and to open wide for the free passage of air when the bellows move in an opposite direction, said valve comprising a housing associated with the closure, a valve plate contained therein, a valve stem passing through the wall of the housing and carrying the valve plate andan annular valve ring projectinginwardly from the housing wlall adapted to be engaged by the valve p ate.

9. A bellows comprising a hollow valve stem, an adjustable needle valve adapted `to f control air passing therethrough, an

annular plate mounted thereon, a plurality of superposed iiexible annular disks joined at their alternate inner and outer eriph- (i) at its outer periphery to the outer periphery of the annular p ate, and a closure for the opposed end of the bellows, a separate valve associated with the bellows adapted to seat and close while the bellows are expanding and open wide for free passage of a1r while the bellows are collapsing.

Signed at Chicago, county `of Cook and State of Illinois, this 16th day of November, 1923.

HULBERT SANNER. 

